Samuel l



(No Model.) S. L. ALLEN.

SHEET METAL STANDARD FOR GULTIVATOR TEETH. No. 280,114. Patents June 26, 1883.

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N. PKTERS. PMo-Lhhogmphon wminmn, DV 0 iron, as usual, the standard is made of sheethave invented Improvements in Standards for I NITE STATES arnnr OFFICE.

SAMUEL L. ATJTJENX OF CINNAMINSON, NEYV JERSEY.

' SPECIFICATION. forming part of Letters Patent No. 280,114, dated June 26, 1883,

Application filed February 26, 1883. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL L. ALLEN, a citizen of the United States, and aresident of Cinnaminson, Burlington county, New Jersey,

Oultivator-Teeth, of which the following is a specification.

My invention relates to an improvement in the standards which are secured to the frames of cultivators,and to which are attached removable blades or teeth, the main feature of my invention being the combination of a standard made of struck up steel and having strengthening ribs or flanges with a tooth or blade attached to the standard, all substantially as described hereinafter, the object of my invention being to make acultivator-standard which shall be tougher, l'ess liable to bend, better adapted to resist torsion, and at the same time lighter and cheaper than an ordinary standard of forged wrought-iron.

In the accompanying drawings, Figure 1 is a vertical section of my improved standard for cultivator-teeth; Fig. 2, a transverse section on the line 1 2'; Fig. "3, a side view of part of a standard with 'a head differing from that shown in Fig. 1 Fig. 4, a section on the line 3 4, Fig. 3; Fig. 5, a perspective view of a modified form of standard Fig. 6, a side view of Fig. 5, showing the blade of the cutter attached to the standard Fig. 7, a vertical section of Fig. 6; Fig. 8, a transverse section on the line 5 6, Fig. 6 and Figs. 9 and 10 views representing further modifications.

Referring to Figs. 1 and 2, A represents the improved standard; B, the cultivator blade or tooth attached thereto.

Instead of being a solid forging of wroughtsteel struck up while hot by the aid of dies,

and a drop-press to reduce the plate to the curved shape represented in Fig. 1, or a shape approximating thereto, and two ribs or flanges,

a a, being at the same time formed to add rigidity and strength to the standard, these flanges extending from end to end of the same,

or nearly so.

The front of the lower portion of the standard is shaped to accord with and form a bearing for the tooth or blade B,which is secured by one or more bolts, Dtwo in the present instance. The nuts of these bolts must be at the the plan described hereinafter of avoiding the necessity of resorting to these ferrules.

The upper portion of the standard is bent abruptly, and terminates in a head composed of two cheek-pieces, d, which are continuations of the rear ribs, a, the head being thus constructed so that it can receive part of the cultivatorframeto which it has to be secured; or the upper bent end of the standard can be made of the shape shown in Fig. 3.

Referring to Figs. 5, 6, 7, and 8, which show the standard so constructed as to dispense with the ferrules shown in Fig. 1, it will be seen that a depression, m, extending from about the line :0 to the lower end of the standard, is made in the front of the same, thereby forming a protuberance, n, at the rear, aflange, 1), projecting on each side of the depression, Fig. 5, the flanges forming a bearing for the back of the cultivator tooth or blade B. Two bolts with beveled heads adapted to countersunk holes in the blade pass through the rear protuberance, a, of the standard, so that the nuts are exposed and can be easily turned bya wrench. In this case there are the two rear strengtheningflanges, a a, as in the first example; but they do not extend from end to end of the tooth, but gradually merge into the'flanges p p, the loss of strength in the standard due to this change in the direction of the flanges being counteracted by the rear protuberance, n, caused by the depression m.

The head of the standard in Figs. 5, G, and 7 differs from that shown in Fig. 3, but forms no partof my present invention. The rear strengthening-flanges, however, may be continned to the lower end of the standard, and yet permit the formation of a rear protuberance for the nut of the bolt to bear against. Thus, in Figs. 9 and 10 the protuberance consists of an annular proj ection. made during the striking up of the plate to form the standard, this protuberance affording a bearing for the nut.

It has been found that cultivator-standards made in the manner described of steel plates are stronger and more capable of resisting the torsion to which they are subjected than ordi nary forged standards of wrought-iron; at the same time they are lighter, for comparatively thin steel may be used, owing to the strength imparted to the standards by the flanges, and additional strength may be imparted to the standards by a proper tempering of the steel after the plates have been struck up to the desired shape. My improved standards moreover, are as cheap as ordinary solid wroughtiron standards, for much less metal. is used in their construction, and they can be rapidly made by suitable dies and a drop-press.

I claim as my invention 1. A cultivatorstandard of struck-up sheetsteel, having at the rear flanges a a and at the SAMUEL L. ALLEN.

Witnesses:

HARRY DRURY, HARRY SMITH. 

